Motor driven culinary machine



July 26, 1938.

J. LIPS MOTOR DRIVEN CULINARY MACHINE Filed July 28, 1937 2 Sheets-Sheet l INVENTOR 'JAKOB L/Ps I I I l w A ATTORNEY J. LIPS MOTOR DRIVEN CULINARY MACHINE July 26, 1938.

Filed July 28, 1957 2 Sheets-Sheet 2 INVENTOR JAKOB LIPS A- ATTORNEYS Patented July 26, 1938 Y UNITED STATES PATENT OFFlCE MOTOR DRIVEN CULINARY MACHINE Jakob Lips, Urdorf, Switzerland 1 Application July 28, 1937, Serial No. 156.073 In Switzerland July 23, 1936 1 Claim. (Cl. 192'-3.5)

This invention relates to a motor driven culibranched-off drive. The connection to the main nary machine, which is more especially adapted shaft is effected by a rotatably mounted worm to be used as a table machine, that is to say not which is connected to the main shaft by a fricas a machine which stands on the floor, but a. tion clutch which is capable of being disengaged.

5 machine which can be placed on a kitchen table. During speed changing the'worm is disengaged so These table machines, operate under entirely that then the upper branched driving shaft runs different conditions to those, mostly usual in large idly. concerns consisting of a large aggregate standing The superposed gears, operating at high speeds on the floor. In contrast a much larger univerof rotation, require careful lubrication. This is sality and efficiency is required of table machines effected in the simplest manner by means of a 192 as in general they are constructed for smaller conseparate oil supply which continuously conducts cerns. Further, there is also a very substantial the oil collecting in the lower part, of the stand-' difference between the conditions to be fulfilled like casing to the top thereof. by a table machine and the conditions to be :ful- In order to prevent damaging the cable which filled by a machine standing on the floor, namely conducts the current to the electric motor driv- 1 5 the entirely different location of the handles and ing the machine, provision is made that the standoperating devices. like casing cannot be turned through more than According to the present invention these conabout 360. A stop in the foot prevents further ditions are borne in mind by making provision rotation so that the casing with the driving defor the connection of the operating devices in vices must then be turned in the opposite direc: 20 difierent positions of height so that the device used tion. This angle of rotation is entirely suiiicient at any time is at a convenient level and easy of for bringing any operating device in front of the. access for operation. For this purpose a driving position occupied by the person operating the shaft, which is preferably vertical, is so arranged machine. It is thus not possible to twist or dein a casing, in the form of a stand, that it is postach the cable. 5 sible for a number of horizontal driving shafts A form ofconstruction of a machine accordto extend therefrom at different heights, the uping to the inventionis shown diagrammatically permost one driving a driving shaft located parby way of example in the accompanying drawings, allel or substantially parallel to the main shaft wherein and which is used as a stirring device. As the 1 OWS a Vert al Se tio Of the achine, 30 stirring device must operate at different speeds a Fig. 2 shows a front elevation, whilst change speed gear must be arranged in advance Figs. 3 and 4 show sections on the lines IIIIII thereof. In addition by making the stand-like and IVIV of Fig. l. casing rotatable provision is made for turning the Fig. 5 is a section along the line V-V of Fig. 1;

stirring device or the other operating devices and 35 towards the front or towards the back, as may be Fig. 6 is a section along the line VI-VI of Fig. 4. desired without interfering with the drive, so On a base plate I there is rotatably mounted that the person manipulating the machine may the stand-like casing 2. By means of a set screw for example operate the friction device whilst the 3 it can be secured in any Set Operating position stirring device continues operation automatically n the knDWn m e o example y means f without interfering with the actuation of the frican annular stop prov d 011 the Casing but not tion device. shown in the drawings. In the casing 2 there is It is extremely important for the gearing to be mounted the vertical main shaft 4 which passes easily accessible and yet closed completely to the through the cover plate of the casing at Iii] and outside, as in the case of culinary machine it i is connected to the shaft of an electric motor 5. 45 absolutely essential to prevent the outward pase S pp y 0 Current takes place through the sage of a lubricant as this would pollute the foodp through an Opening 5 in the motor Casing stuff. For this purpose the upper gearing, accord- The opening 6 is located in alignment with the ing to the invention, is located in a separate gear m tor Shaft. T e Shaft 4 d V S t ou t e meframe mounted in the casing for separate removdium of worm wheel gearing ill, I l the lower 50 al. The casing can therefore be constructed i shafts3l. 32,1ocated at different levels, which lead one part up to the top and at the top is closed by to devices I and 9, whilst a further subsidiary a cover. The drive of the upper driving device gear 33 leads to the ope device 8 (Figcan be disengaged in order to enable a change Between each member 3|, 32 and 33 and the of speed to be elfected in connection with the corresponding operating device there is located a 55 clutch of known type, not shown, which can be engaged and disengaged in the known manner by clutch controlling means l3, l4 and 5 (Figs. 2, 3 and 4).

Above the gears leading to the lower driving shaft there is provided the gear for the stirring mechanism. This is effected by means of a worm |2 (Fig. 4) rotatably mounted on the shaft 4. In the section drawing the worm is hidden by the driving shaft located in front thereof. The worm I2 is connected for rotation to the bush 34. The bush 34 may be moved axially in the known manner within the worm or worm wheel l2. The bush 34 is provided at the lower end with the clutch disc 35. A spring 36 presses the clutch disc 35 against the clutch disc 20 keyed to the shaft 4, for example by a pin 31. For disengaging the friction clutch there is provided a bell crank lever 22. The fork 38 of the bell crank lever engages with the bush 34 below the disc flange 39 and spreads the clutch disc 35 and the counterdisc 20 apart against the action of the spring 34 when the free arm 22 of the bell crank lever is rocked in an anti-clockwise direction (Fig. 1). The lever 22 is rocked automatically during the rotation of the cam disc 2| by means of the knob l6 (Figs. 2 and 4). By means of this knob the clutch sleeve 40 on the branch shaft 4|, driven from the worm or worm wheel |2 through the worm or worm wheel 42, is moved simultaneously to the left or to the right and thus couples the drive of the intermediate gear 43 and 44 for slow or fast movement of the intermediate shaft 45 of the stirring mechanism. The intermediate shaft 45 drives the vertical stirring mechanism shaft 6 through worm wheel gearing 46.

By the operation of the cam disc 2| the friction clutch 20, 3 B, 35 is automatically disengaged each timethere is a change of speed so that the worm or worm wheel M then rotates freely onthe shaft 4. It will be understood that when the knob I6 is not turned through a complete revolution there may also be obtained a position in which a cam of the cam disc 2| has turned the lever 22 to the left so that the stirring mechanism shaft is completely disengaged.

The entire upper gearing is mounted in a separate frame 41 through which there also passes the main shaft 4 (Fig 4). The frame is secured by three bolts 48, 49 and 5|] to brackets (Fig. 1). The casing 2 is closed at the top by a cover 52 on which the motor 5 is mounted.

For lubricating the gearings there is provided in the casing 2 an oil bath |8. The casing is closed at the lower part by a partition I! and above this partition and above the lower bearing 53 of the shaft 4, is located a delivery pump 26 in the form of a blade wheel which conveys oil from the oil bath I8 through the pipe 2'! to the upper oil collector 28 for the bearings 29 of the main shaft, from which the oil is distributed to the gearings within the casing without any liability of oil escaping to the outside as the casing completely encloses all the gearings. In addition oil cups are provided above the bearings of the gearings, in which cups oil collects and subsequently flows. to the points to be lubricated. A lubrication point is indicated for example at 54 in Fig. 1.

The casing is rotated about the pivot 55 on the base The casing is guided on this pivot by the inwardly extending bearing 56 and the ring 51 which is connected by ribs 58 and 59 to the outer wall of the casing. A stop 60 in the base of the machine simultaneously serves for limiting the rotation thereof, thus preventing the casing from being rotated a number of times and thus damaging the cable which enters at 6.

What I wish to claim is:

In a culinary machine having a rotary casing, a vertical main driving shaft journalled in said casing, and an electric motor on top of said casing connected to said main driving shaft; the combination of a stirring shaft with .a clutch disc rotatable along with said main driving shaft, a bush having another clutch disc; a spring engaging said bush and pressing the second-mentioned clutch disc against the first-mentioned clutch disc, a worm rotatable along with said bush, 2. bell crank lever having a fork and a free arm; said fork engaging said bush and being adapted to move the second-mentioned clutch disc away from the first-mentioned clutch disc when said free arm is turned in a predetermined direction, a cam disc engaging said free arm and adapted to turn the same against the action of said spring, a knob connected with said cam disc, a horizontal branch shaft, a clutch sleeve movable upon said branch shaft, a groove being formed in said clutch sleeve, a pin on said cam disc engaging said groove for moving said clutch sleeve upon said branch shaft, a gear connected with said branch shaft and meshing with said worm on said vertical main driving shaft, and a speed changing gear connecting said stirring shaft with said branch shaft.

JAKOB LIPS. 

